Filled-bag-sewing machine



Nov. 6 1923.

S. G. TATE FILLED BAG SEWING MACHINE Filed Oct. 2, 1918 5 Sheets-Sheet 1a nucui'oz 1 (to-z mugs Nov. 6 1923.

S. G. TATE FILLED BAG SEWING-MACHINE Filed Oct. 2, 1918 '5 Sheets-Sheet2 Nov. 6 1923.

S. G. TATE FILLED BAG SEWING MACHINE 5 Sheets-Sheet '5 Filed Oct.

awuamtm amvmdoz Nov. 6, 1923.

S. G. TATE FILLED BAG SEWING MACHINE I Filed Oct. 2, 1918 5Sheets-Sheet' Nov. 6 1923.

S. G; TATE FILLED BAG SEWING MACHYTJE- 5 Sheets-Sheet 5 Filed Oct. 2,1918 Patented Nov. 6, 1923.

SAMUEL GEORGE TATE, AOF CHICAGO,.ILLI1\IOI, ASSIGNOR TO.U1\TION SPECIALMA- CHINE COMPANY, OF CHICAGO, ILLINOIS, A CORPORATION OF ILLINOIS.

EILLED-BAGwSEWIlYG MACHINE. 7

Application fi1ed.Oct ober 2, 1918. Serial No. 256,619.

To all whom it may concern:

Be it known that I. SAMUEL G. TATE, a citizen of the United States,residing at Chicago, in the county of Cook, State of Illinois, haveinvented certain new and useful Improvements in Filled-Bag-Sewi'ngMachines, of which the'following ,is a description, reference being hadto the accompanying drawing and tothe figures of reference markedthereon.

The invention relatesto new and useful improvements in filled bagsewing'machines.

In the patent granted to John Bigelow, December 31st, 1907, No. 875,314,thereis shown and described a filled bag sewing machine having a bagsupport open atone side and a sewing head overhanging jthe balg support;This bag support is in thefform of an endless conveyor. The conveyor isdriven from a fixed driving shaft by a connection which is adjustable soas to permit the table to be shifted vertically for different sized bagsand still maintain the driving connection between the said shaft and theconveyor.

An object of the present invention is ,to provide a machine of the abovegeneral character with driving means for the con veyor, which drivingmeans includes a drive ing member fixed against endwise or lateralmovement so that the support for the bag may be adjusted verticallyfordifferentjsize bags without requiring adjustment orrepositioning ofthe driving connections.

In the drawings which show one form of my invention:

Figure 1 is a front view of a sewing machine for sewing filled bags,having im-H provements embodied therein;

Figure 2 is a view partly in section and partly in plan, showing partsofthe machine;

Figure 3 is an end view of apart of the machine;

Figure 4 is a sectional view 4-4: of Figure 2;

Figure 5 is a detail, showing the manner of supporting the lower end ofthe main driving shaft;

Figure 6 is a sectional view on 6-6 of Figure 3;

Figure 7 is a perspective viewof the-support and brackets which carrythe endless conveyor.

The invention is directed broadly to the p 0.11 the line the lineoperating means for the conveyor of a filled bag closing machine.Specifically, the machine includes a frame at one side of which is asupport and overhanging the support is asewing head having stitchingmechanism for stitching the mouth of the bag. Movableon the support is aconveyor which carrice the bag to the stitching mechanism. This conveyorruns over rollers forming partofthe support, an operating pulley beneaththe support, and over an idler roller, also beneath the support.Yielding means is provided1,formoving the idler roller to keep the.jqnveyor indriving engagement with th pera pu y- The support is capableof being adjusted vertically 'to accommodate different sized bags andwhen said support is adjusted, the idlelfllollor takes upa new position,giving or'taki-ng up the conveyor, so as to maintainthe same in properdriv ng contact h the operating pulley which is maintained in the samedriving position for all adjustments of the table.

'Referringmore in detail to the drawings. myi nprovedfilled bag machineincludes a main supporting frame 1, having a platform 2" atlthe upperend thereof, on which is 1,I1.O1111 eda;bracket 3 carrying a sewing head4, sewing head 4 has an overhanging arm 5, in" which a needle barreciprocates, and a work supporting cylinder 6. The slewinghead is ofthe usual construction and detail eddescription thereof is not thoughtneces ary Th's'seWi-nghead is driven froma vertical 'counter; shaft 'T,which carriesa belt wheel belt 9 running over the belt wheel 8, alsoruns over the belt wheel 10 of the sewinghead. The shaft 7 is drivenfrom a hdriz ontal main shaft 11, by means of a belt 12, seeV FigureBThe shaft 11 is con-- nected by a friction clutch 13, withthe shaft of amotor indicated at'M in the drawings.

The shaft 7 is mounted in suitable bearings, the lower one of whichisindicated at 14, in the drawings. The shaft 7. extends thl'Ql gh thisbearing 14 and; is held from endwisemovement therein by collars 15 andlo' which are secured to the shaft-7, see Fig? ure 5.j Atthe'lower endof the shaft 7 there is afbeltiwheel 17, with which the belt 12 cooperates. S aid belt wheel is. provided with' afflangejls to retain thebeltthereon. Mounted on the frame 1 is a cross'piece 40 which carriesprojecting brackets 19 and 20. These brackets may be bolted or otherwise secured to the cross piece. At one end of the cross piece there isa roller 24 and at the other end there is a roller 25. Located betweenthe rollers 24 and and mounted on the projecting brackets are sidesections 21 and 22, which support a series of rollers 23. Running overthe rollers 24 and 25 and the small rollers 23 is a conveyor 26. Thisconveyor 26 also runs over a driving pulley 27 attached to the shaft 28.v This shaft 28 is mounted in suitable bearings having a fixed positionrelative to the frame 1 and carries a spiral gear 29, meshing with aworm gear 30 on the shaft 11. The pulley 27 is attached to the shaft, asabove noted, and as the shaft is also mounted in fixed bearings, saidpulley has neither an endwise nor a lateral movement. The conveyor 26also runs over an idler roller 31. The bearings of this idler roller 31are indicated at 32 in the drawings. Each bearing is mounted to slide ina slot 33, formed in a supporting arm 34. These supporting arms 34 arefreely mounted on the shaft 28 and swing about the same as an axis.Connected with each bearing 32 is a rock arm 36, pivoted at 37 to itsrespective arm 34. Mounted on each rock arm is a weight 38, which may beadjusted on the rock arm. The rock arm is provided with a slot 39 forthe bearing 32 of the idler roller 31. It will be readily seen,therefore, that the bearings of this roller 31 may freely slide in theslots 33 and the weights 38 normally operate to force the bearings tothe right, as viewed in Figure 1. The conveyor runs over this pulley insuch a direction that the weights place the conveyor under tension andhold the conveyor in driving engagement with the pulley 27.

The cross piece 40 carrying the rollers 24 and 25 and also the brackets19 and '20, is mounted so as to slide vertically on the frame 1.Attached to the cross piece, adjacent each end thereof, is a chain 44which runs over a sprocket wheel 45. The sprocket wheels 45 for thetwo'chains are mounted on a shaft 46 operated by a hand crank 47. Aweight 48 is connected to each chain. These weights are forcounter-balancing the conveyor support, whichfconsists' .of the brackets19 and 20, the rollers 24 and 25 and the intermediate table formed bythe side sections 21 and 22 and the small rollers carried thereby. Thecross piece 40 is slidably secured to the side members of the frame 1 byflange plates 41. Extending through the flange on each plate is asetscrew 42, having a pivoted handle 43. These set screws maybe used forlocking the conveyor. support in an adjusted position. It will readilybe seen that afterthe set screws 42'have' been released, the conveyorsupport may be raised or lowered by turning the shaft47 and as therollers 24 and 25 move up and down with the support, the section of theconveyor on which the filled bags are supported may be moved toward andfrom the sewing head. lVhen the conveyor suppor' is raised from the fullline position in Fig ure 1, to the dotted line position shown therein,the idler roller 31 will. move upwardly to the dotted line positionshown in this figure. When the table is lowered, then, of course, theidler roller will move downwardly again. The length of the idler rolleris shorter than the distance between the side sections 21 and 22, and,therefore, when the table is lowered said side sections again move to apoint below the upper face of the idler roller and this permits theconveyor support to move downwardly to a very low limit and gives a widerange of adjustment for the machine.

As a means for controlling the sewing head and the operation of theconveyor, 1 have provided a clutch lever 49, see Figure 2, whichcontrols the clutch 13. This lever 49 is pivoted at 50 to the base ofthe machine and is moved by a link 51 connected toan arm 52 on a rocklever 53. At the extreme outer end of the rock lever 53 there is anupwardly extending arm 54, which may be engaged by the knee of theoperator for shifting the rock lever. In this way the operator standingin front of the machine may readily control the clutch 13 and as theconveyor and sewing head are both operated from the shaft 11, they willbe simul taneously started or stopped.

It will be apparent, therefore, that I have provided a drivingconnection for the conveyor which permits the table to be adjustedvertically and at the same time the driving connection with the conveyoris neither moved endwise nor laterally, but remains in a'fixed position.In theBigelow patent, above referred to, the driving connection for theconveyor must be an adjustable one, and with my improved drivingconnection, I have done away with this adjustable con nection, which isliable to create wear and more or less looseness in the parts.

In the present embodiment of the invention, this conveyor is driven fromthe same shaft which drives the sewing head. It will be understood. ofcourse, that this is not essential. as other means may be used fordriving the conveyor. The essential feature is that the conveyor shallbe driven in proper timing with the feed of the sewing head, so as toconvey the bottom of the bag at substantially the same speed that thetop of the bag is fed by the sewing head.

It is obvious that minor changes in the details 'of construction andarrangement of parts may be made, without departingfrom the spiritof myinvention.

Having thus described my invention,

what I' claim as new and desire to secure by Letters Patent, is: 1. Afilled bag sewing machine including in combination, a frame, avertically adjustable open-sided conveyor support carried by said frame,means for adjusting said conveyor support vertically, a sewing headcarried by said frame and overhanging said -conveyor support, means foroperating said sewing head, a conveyor running over said conveyorsupport for conveying a bag past the sewing head, means for actuatingsaid conveyor including an operating shaft, bearings for said shafthaving a fixed position on said frame, and means carried by said shaftand directly engaging said conveyor for driving the same in any adjustedposition of said con veyor support.

2. A filled bag sewing machine including in combination, a frame, avertically adjustable open-sided conveyor support carried by said frame,means for adjusting said conveyor support vertically, a sewing headcarried by said frame and overhanging said conveyor support, means foroperating said sewing head, a conveyor running over said conveyorsupport for conveying a bag past the sewing head, means for actuatingsaid conveyor including an operating shaft. bearings for said shafthaving a fixed position on said frame, a. pulley mounted on said shaft,and means for holding the conveyor in driving engagement with saidpulley in any adjusted position of said conveyor support.

3. A filled bag sewing machine including in combination, a frame, avertically adjustable open-sided conveyor support carried by said frameand including end rollers and an intermediate table, means for adjustingsaid conveyor vertically, a. sewing head carried by said frame andoverhanging said conveyor support, means for operating said sewing head,a conveyor movable over said end rollers and table for conveying the bagpast the sewing head, means for actuating said conveyor including anoperating shaft, bearings for said operating shaft having a fixedposition on said frame, a pulley attached to said shaft, and means forholding said conveyor in driving engagement with said pulley in anyadjusted position of said conveyor support.

4. A filled bag sewing machine including in combination, a frame, avertically ad justable open-sided conveyor support having rollers atopposite ends thereof, means for adjusting said support, a sewing headoverhanging said support, means for operating the sewing head, a drivingshaftlocated below said conveyor support and mounted in bearings havinga fixed position relative to said frame, a driving pulley attached tosaid shaft, a conveyor extending around said rollers and the drivingpulley, and means for holding said conveyorin driving engagement withsaid pulley ,inany adjusted position of said conveyor support. 5. filledbag sewing machine including in co nbination, a frame, a verticallyadjustable open-sided conveyor ,supporthaving rollers {at opposite endsI thereof I and; a supporting 'table intermediate the rollers, means foradjusting said support, a sewing head overhanging said support, meansfor operating the sewing. head, a driving shaft located below saidconveyor support and mounted in bearings having a fixed position on theframe, a driving pulley attached to said shaft, a conveyor extendingaround said rollers and the driving pulley, and means for holding saidconveyor in driving engagement with said pulley in any adjusted positionof said conveyor support.

' 6. A filled bag sewing machine including in combination, a frame, avertically adjustable open-sided conveyor support having rollers atopposite ends thereof and a supporting table intermediate the rollers,Jeans for adjusting said support, a sewing head overhanging saidsupport, means for operating the sewing head, a driving shaft locatedbelow said conveyor support and mounted in bearings having a fixedposition on the frame, a driving pulley attached to said shaft, aconveyor extending around said rollers and the driving pulley, an idlerroller below the support, and means for automatically causing said idlerroller to maintain the conveyor in driving engagement with said pulleyin any adjusted position of said conveyor support. 4

7. A filled bag sewing machine including in combination, a frame, avertically adjustable open-sided conveyor support carried by said frame,means for adjusting said convevor support vertically, a sewing headcarried by said frame, and overhanging said conveyor support, means foroperating said sewing head, a conveyor run ning over said conveyorsupport for conveying a bag past the sewing head, means for actuatingsaid conveyor including an operating shaft, bearings for said shafthaving a fixed position on said frame, means carried by said shaft andengaging said conveyor for driving the same in any adjusted position ofsaid conveyor support, and manuallv operable means for controlling saidsewing head, operating means and said conveyor operating means.

8. A filled bag sewing machine including in combination, a frame, avertically adjustable open-sided conveyor support carried by said frame,means for adjusting said conveyor support vertically, a sewing headcarried by said frame and overhanging said conveyor support, a conveyormovable over saidconveyor support for conveying a bag for operating saidsewing head vfrom said past the sewing head, means for actuating countershaft, a clutch interposed between said conveyor including an operatingshaft, said main and counter shafts, and manually bearings for saidshaft having a fixed posioperable means for controlling said clutch 5tion on the frame, and means carried by whereby said sewing head andconveyor will 15 said shaft and engaging said conveyor for besimultaneously started or stopped. driving the same in any adjustedposition In testimony whereof, I affix my signaof said conveyor support,amain driving ture.

shaft, a counter shaft operatively connected i 10 with said conveyoroperating shaft, means SAMUEL GEORGE TATE.

